Curio is an intuitive, freeform notebook environment with all the
integrated tools you need to take notes, brainstorm ideas, collect
research, and organize your tasks and documents. A single, incredibly
powerful application where you can be more productive and focus on
getting things done. And, with Curio 11, new tools and features are at
your fingertips so you can truly master your productivity.

Make the dream of the paperless office come true with DEVONthink and keep all your
text and RTF files,
scanned documents,
notes,
e-mails,
images,
chat logs,
bookmarks and
multimedia files
together in one simple to use database. Integrate both local documents
and live content from the Internet to keep all project-related
information together.
Pro office has scanner support and OCR

EagleFiler makes managing your information easy. It lets you archive and search mail, Web
pages, PDF files, word processing documents, images, and more. Use it to collect
information from a variety of sources. Browse different types of files using a standard
three-pane interface. Organize them into folders and annotate them with tags and notes, or
leave everything in one folder and pin-point the information you need using the live
search. Since EagleFiler stores its library in Finder format, you can use it in concert
with the other tools in your Mac ecosystem.

It's journal keeping for the 21st century. Instead of paper and pen, it
is your journal on your Mac. Unlike other journal applications,
MacJournal is packed with features, setting it apart. You can create as
many journals as you'd like: for work, home, family, or friends. You can
upload your entries to your blog. Record a message or a child's first
word. It is one place where you can put everything. With MacJournal you
can document any life event with all the sounds, images - even video -
that comes with it.
You can’t do that with a notebook.

Combine handwriting, photos and typing in a single note to bring your
projects to life. Use a wide range of note-taking and sketching tools to
capture every detail. You can even add and annotate PDFs in Notability.
It’s the perfect place to create and organize work, school, and life's
information!

Notational Velocity is a way to take notes quickly and effortlessly using just your keyboard.
nvALT 2 is a fork of the original Notational Velocity with some
additional features and interface modifications, including MultiMarkdown
functionality. It has been developed by Elastic Threads (David Halter)
and Brett Terpstra, and made available for free

Records Master is a secure file manager that allows you to collect
important records (such as bank statements, credit card statements,
investment records, bills, or receipts) or PDFs, in a database and allow
for:
- easy addition of new files (importing),
- organization of files in hierarchical folders,
- optional organization of files by date,
- easy access to existing files (browsing, finding, smart folders exporting, printing)
- the ability to associate notes with files or folders,
- the ability to associate attributes with files (e.g., cost) and produce reports based on those attributes,
- reminders to download or scan in recurring records such as financial statements, (including an integrated website password manager with advanced features to make it easy for you to go to websites to download the records),
- encrypting the database, and
- automatic or manual backup of the database.
Think of it as a replacement for a file cabinet but with easier filing
and retrieval. You can also use it just to keep any files
together...especially useful for PDFs.

Simplenote is an easy way to keep notes, lists, ideas and more. Your
notes stay in sync with all your devices for free.
The Simplenote experience is all about speed and efficiency. Open it,
write some thoughts, and you're done. As your collection of notes grows,
you can search them instantly and keep them organized with tags and
pins. You can also share notes and publish them for other people.
The best way to learn about Simplenote is to try it. You'll be asked to
create an account. This allows your notes to be backed up online and
synchronized automatically.

Tinderbox is a personal content management assistant. It stores your
notes, ideas, and plans. It can help you organize and understand them.
And Tinderbox helps you share ideas through Web journals and web logs.
Tinderbox maps your notes as you make them. Build relationships by
arranging notes, organizing them with shape and color, linking them.
Tinderbox lets you record ideas quickly and keep them where you'll find
them again when you need them.

VoodooPad is a place to write down your notes and thoughts. Ideas,
images, lists, passwords, your mom's apple pie recipe. Include anything
you need to keep track of and organize, and VoodooPad will grow with you
without getting in the way.
Drag and drop folders, PDFs, applications, or URLs into VoodooPad, and
they will link up just like on the web. And with powerful search,
nothing will be lost or out of reach.

Yojimbo makes keeping all the small (or even large) bits of information
that pour in every day organized and accessible. It's so simple, there
is no learning curve. Yojimbo's mechanism for collecting, storing and
finding information is so natural and effortless, it will change your
life - without changing the way you work.